Static electricity eliminating mechanism for camera

Abstract

A mechanism for eliminating static electricity for a camera in which the static electricity charge on a photographic film or a magnetic tape is led to a grounding part formed on a camera body through a guide roller means made of electrically conductive material which is constantly pressed, while rotating, into contact with the photographic film or the magnetic tape which is wound up onto a winding spool.

What is claimed is: 
     
       1. A camera having a camera body in which a belt-like recording medium is used, comprising: (a) grounding means formed in the camera body;   (b) rotatable guide roller means made of electrically conductive material for guiding the belt-like recording medium during feeding of said belt-like recording medium in the camera body; and   (c) means for electrically connecting said guide roller means with said grounding means of the camera body;   (d) elastic means made of electric conductive material for elastically urging said guide roller means to said recording medium.   
     
     
       2. A camera having a camera body in which a belt-like recording medium is used, comprising: (a) grounding means formed in the camera body;   (b) rotatable guide roller means made of electrically conductive material for guiding the belt-like recording medium during feeding of said belt-like recording medium in the camera body; and   (c) means for electrically connecting said guide roller means with said grounding means of the camera body; wherein said means for electrically connecting the guide roller means with the grounding means is constituted by a pattern electrically connected with a contact piece of an electric battery, said pattern being formed on a printed circuit board.   
     
     
       3. A camera having a camera body in which a photographic film is used, comprising: (a) grounding means formed in the camera body;   (b) a winding spool for winding up the photographic film;   (c) guide roller means made of electric conductive material for guiding the photographic film during feeding of said photographic film in the camera body, said guide roller means being arranged near said winding spool;   (d) means for electrically connecting said guide roller means with said grounding means of the camera body; and   (e) elastic means made of electric conductive material for elastically urging said guide roller means to said photographic film.   
     
     
       4. A camera according to claim 3, in which said guide roller means includes two guide rollers arranged near said winding spool. 
     
     
       5. A camera according to claim 4, in which said guide rollers are arranged to assist winding of a leader portion of the film onto said winding spool to effect autoloading of a photographic film. 
     
     
       6. A camera according to claim 3, in which said grounding means is formed by at least one metallic plate which constitutes a part of the camera body. 
     
     
       7. A camera according to claim 3, in which said means for electrically connecting the guide roller means with the grounding means is constituted by a pattern electrically connected with a contact piece of an electric battery, said pattern being formed on a printed circuit board.